Laser-based ultrasound for remote and limited access applications

Autor: R. C. Addison, A. D. W. McKie
Rok vydání: 2000
Předmět:
Zdroj: AIP Conference Proceedings.
ISSN: 0094-243X
DOI: 10.1063/1.1306057
Popis: The ability to quickly and directly manipulate flexible low mass optical fibers equipped with specialized endoscopic scanning optics make fiber systems an attractive method for the development of limited and remote access inspection systems. Previous work has shown that a promising approach for the implementation of a fiber-based inspection head is based on the use of a Cassegrain optical collection system. However, the successful implementation of a fiber-based remote and limited access LBU inspection system is reliant on two key factors. First, the capability to efficiently and robustly deliver the high peak-power generation and detection laser beams via fiber optics to the part under test must be established. Secondly, the scattered light from the part must be collected and efficiently coupled to the optical interferometer system via optical fiber. The selection of the generation and detection lasers is a critical step in the process of optimizing the LBU system signal-to-noise ratio. To maintain the a...
Databáze: OpenAIRE